Rather than an all-new game, Deluxe is an overhaul and update to the original Mario Kart 8. That game debuted in 2014 for the WiiU. As the console's best-selling title, it should be no surprise that Nintendo wants to cash in on the success. In addition to new maps, characters, and vastly improved game modes, including the much-maligned Battle Mode.
Deluxe will support up to 8 players in local wireless multiplayer. There is some speculation that the game will use the Switch's portable capabilities for local split-screen on the one of the systems small, portable monitors, but it seems more likely that it's just misleading marketing and not a new feature.
The Nintendo Switch launches on March 3 at a price of $299. That's a bold price, considering Nintendo's recent lack of success compared to its rivals. Unfortunately, fans of Mario Kart will have to wait until Deluxe releases on April 28.